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Parametric force analysis for measurement of arbitrary optical forces on particles trapped in air or vacuum

Published

Author(s)

Haesung Park, Thomas W. LeBrun

Abstract

We demonstrate a new method to measure general optical forces on particles trapped in gaseous or vacuum environments during the ring down of a trapped particle following electrostatic excitation. The method is not limited to the common constraints of linear forces for small oscillations, allows a wide range of displacements to be reached, and measures forces directly from trajectories effectively in real time. Comparisons to traditional thermodynamic measures allows estimation of all system parameters assuming only the known value for the particle density.
Citation
ACS Photonics

Keywords

Optical trapping, Optical tweezers, optical levitation, force measurement

Citation

Park, H. and LeBrun, T. (2015), Parametric force analysis for measurement of arbitrary optical forces on particles trapped in air or vacuum, ACS Photonics, [online], https://doi.org/10.1021/acsphotonics.5b00309 (Accessed May 21, 2024)

Issues

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Created September 7, 2015, Updated October 12, 2021